Door-securer



(No Model.)

0. E. STONE. noon SEQURER.

Patented Aug. 3, 1897 ATTORNEYJ WASNINUTON o c UNITED STATES PATENTOFFICE.

CHARLES EDWVIN STONE, OF AMESBURY, MASSACHUSETTS.

DOOR-S ECURER.

SPECIFICATION forming part of Letters Patent No. 587,496, dated August3, 1897.

Application filed February 12, 1897. Serial No. 623,070. (No model.)

To aZZ whom it may concern;

Be it known that 1, CHARLES EDWIN STONE, a citizen of the United States,residing at Amesbury, in the county of Essex and State of Massachusetts,have invented certain new and useful Improvements in Door-Securers, ofwhich the following is a full and complete specification, such as willenable those skilled in the art to which it appertains to make and usethe same. 7

This invention relates to door-locks; and the object thereof is toprovide an improved device of this class which is adapted to be carriedin the pocket and to be applied for locking a door from the inner sidewhenever desired.

The invention is fully disclosed in the following specification, ofwhich the accompanying drawings form a part, in which Figure 1 is asectional side view of a portion of the frame of a door and a portion ofthe door, showing also my improved lock and the method of operating thesame, the lock being also shown in section; Fig. 2, a front Viewthereof; Fig. 3, a plan View of the lock, and Fig. 4 a longitudinalsection thereof at right angles to the section shown in Fig. 1.

In the drawings forming part of this specification the separate parts ofmy improvement are designated by the same numerals of reference in eachof the views, and in said drawings I have shown at 5 a section of a partof a door-frame, and at 6 a corresponding section of a part of the door.

Formed in the face of the door-frame adjacent to the door is achamberorcavity 7 ,which is covered by a metal plate 8, and this chamher orcavity is adapted to receive the ordinary door latch or lock, it beingunderstood that the door 6 may be provided with the usual latch or look;and in the practice of my invention I provide a lock of this class andfor the purpose herein described, the same consisting of a metal plate9, which is provided at its inner end with a projection or head 10 andat its outer end with an enlarged screw-threaded extension 11.

The screw-threaded extension 11 is flat on its opposite sides, asshownat 12 in Fig. 4, and mounted thereon and adapted to slide thereonis a clamping-jaw 13, which is cylindrical in cross-section, and theinner end of which is larger than the outer end, or said clamping-jaw isslightly conical in form and the outer end thereof is provided with acircular chamber 14, in which is mounted a revoluble nut 15, which isprovided with a screwthreaded bore through which the extension 11 of theplate 9 passes, and said nut is provided at its outer end with acircular flange or rim 45, which is milled at its perimeter, as clearlyshown in Figs. 1, 3, and 4.

The clamping-jaw 13 is provided with a transverse slot 17 at its largerend,which corresponds in width with the thickness of the screw-threadedextension 11 of the plate 9, and the nut 15 is provided with an annular"roove ljj which is formed in its opposite md passing through thesmaller end of the clamping-jaw 13 are pins 18,which enter said groove.4

As thus constructed by turning the nut 15 by means of the flan e 16 thesaid not will be caused to move inwardly or outwardly on thescrewthreaded extension 11, and the clamping-jaw 13 will also be movedoutwardly or inwardly, the direction of these movements depending on thedirection in which the nut 15 is turned, and'said clamping-jaw beingprevented from turning by the form of the plate 9 and the screw-threadedextension 11 thereof.

The operation will be readily understood from the foregoing descriptionwhen taken in connection with the accompanying drawings and thefollowing statement thereof.

Whenever it is desired to lock the door, the nut 15 is turned outwardlyas far as necessary and the clamping-jaw 13 is drawn outwardlytherewith, the plate 9 and the projection or head 10 are placed in theposition shown in Fig. 1, and the door is closed, after which the nut 15is screwed inwardly until the clamping-jaw 13 firmly presses on the doorand the frame 5. When the parts of the lock are in this position, itwill be impossible to open the door, and whenever it is desired to openthe door from the inner side the nut- 15 is screwed outwardly until theclampingjaw 13 is withdrawn far enough to permit the door to open.

One of the objects of the transverse slot 17in the jaw 13 is to provideroom for the projection or striker 19, with which most doors areprovided and in connection with which the ordinary latch of the ordinarydoorlock operates when the door is closed. This door latch and lock arenot shown for the reason that they form no part of this invention, andby forming the slot 17 in the clampingjaw 13 I provide means to enablethe jaw to press firmly upon the frame of the door and the adjacent partof the door, as will be readily understood, and in my invention, as willalso be understood, the clamping-jaw 13 is not turned when it is forcedinwardly by the nut 15, and this feature of the construction preventsthe scratching and otherwise injuring the frame and the door, and saidjaw may also be provided with a facing of some soft material, ifdesired.

This device is simple in construction and operation and is perfectlyadapted to accomplish the result for which it is intended and may beemployed whenever devices of this class are necessary.

Having fully described my invention, I claim as new and desire to secureby Letters Patent A door-securer comprising a metal plate 9 having ahead 10 and a screw-threaded extension 11, a clamping-j aw 13, providedwith a slot 17 and a chamber la adapted to receive a screw-threaded nut15 which is provided with a milled flange 16, and an annular groove 18,adapted to engage pins passing through said jaw, all combinedsubstantially as shown and for the purpose set forth.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of the subscribing witnesses, this 3d day of February,1897.

CHARLES EDlVlN STONE.

Vitnesses:

FRANCES C. SLAGHT, ANNIE M. WALLACE.

